ES2666669T3 - Thrust control valve and flying object - Google Patents

Abstract

A thrust control valve (10; 50; 60; 70; 80; 90) for performing the trajectory control and posture control of a flying object, comprising: a valve element (15) in which it is formed a gas injection passage (L), through which an operating gas (G) to be injected flows during operation, and a valve seating surface (P1) is formed in the gas injection passage ( L); and a valve stem (16) that is provided within the gas injection passage (L) and that has a valve seat surface (P5) that is configured to make contact with the valve seating surface (P1) and to thus close the thrust control valve (10; 50; 60; 70; 80; 90), and a guide surface (P4) that is arranged to make contact with an inner circumferential surface of the gas injection passage ( L) of the valve element (15), even in a case where the valve seat surface (P5) has been separated from the valve seating surface (P1), is formed on an outer circumferential surface of the valve stem (16), wherein the guide surface (P4) is formed on the downstream side of the valve seat surface (P5) in the gas flow direction of the operating gas (G).

Description

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DESCRIPTION

Thrust control valve and flying object Technical field

The present invention relates to a thrust control valve and a flying object provided therein. Prior art

In the related art, the thrust control valves that perform trajectory control and posture control of a flying object are known (for example, see JP 2004-251181A). The thrust control valves have a nozzle through which a propellant gas (operating gas) flows. A gas supply chamber, a gas passage and a gas injection chamber are formed in the nozzle from an upstream side in a gas flow direction. A plug is inserted inside the nozzle. The plug is arranged to be able to move between the gas passage and the gas injection chamber. When a propulsion control valve is closed, an outer circumferential surface of the plug is brought in close contact with an inner circumferential surface of the nozzle and, when the propulsion control valve is opened, the outer circumferential surface of the plug is separated from the inner circumferential surface of the nozzle.

GB 1480723 discloses a solid double-pass rocket propulsion nozzle that discloses the features of the preamble portion of claim 1. The rocket nozzle includes a valve element that can be moved inside and guided by a ring that It is a backward extension (with respect to the direction of gas flow) in the nozzle body. A primary gas passage is formed through the center of the movable body and a secondary gas injection passage is formed around an outer periphery of the movable body. The secondary injection passage is closed by bringing the surface towards the end of the movable body and the surface that represents the valve seat surface for the secondary injection passage on the nozzle body in contact with each other.

US 3182447 A discloses a reaction engine with a similar concept of a double pass nozzle. Summary of the invention Technical problem

However, in the thrust control valves of the related art, the outer circumferential surface of the plug is separated from the inner circumferential surface of the nozzle at the time of opening the valve. In this case, since the plug is placed in a free state of detachment from the nozzle, the position of the plug with respect to the nozzle can be tilted. Specifically, a central axis of the cap and a central axis of the nozzle deviates from positionally deflected from each other and, a gap between the inner circumferential surface of the nozzle and the outer circumferential surface of the cap becomes non-uniform or, the central axis of the cap inclines with respect to the central axis of the nozzle. Accordingly, the shape of a flow path between the inner circumferential surface of the nozzle and the outer circumferential surface of the cap may vary. In this case, variations in the distribution of the injection of the propellant gas from the thrust control valve can take place.

Thus, an object of the invention is to provide a thrust control valve and a flying object that can properly inject an operating gas, eliminating variations in the distribution of the operation gas injection.

Problem solution

The invention provides a thrust control valve for performing the control trajectory and control of the posture of a flying object that includes the features of claim 1.

According to this configuration, the guide surface that makes contact with the inner circumferential surface of the gas injection passage of the valve element is formed on the outer circumferential surface of the valve stem. For this reason, even in a case where the valve seat surface of the valve stem has separated from the valve seating surface of the valve element, the guide surface of the valve stem contacts the guided surface of the valve. valve element Therefore, the valve stem can be guided along the inner circumferential surface of the valve element. Therefore, since a portion between the valve element and the valve stem can be maintained by the inner circumferential surface of the valve element, the mutual positions of the valve element and the valve stem can be properly maintained. From the above, the operating gas can be properly injected, eliminating variations in the distribution of the operation gas injection.

In this case, it is preferred that the guide surface is formed on a side downstream of the seating surface.

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valve in the gas flow direction of the operating gas.

According to this configuration, even if the operating gas passing between the valve seating surface and the valve seat surface is directed towards the downstream side, the valve stem can be guided along the circumferential surface inside the valve element, on the downstream side of the valve seat surface. For this reason, it can be difficult to influence the operating gas. Therefore, the positions of the valve stem and the valve element around the valve seating surface and the valve seating surface can be properly maintained.

In this case, it is preferred that the valve stem has a gas flow part, through which, the operating gas flows, is formed at a point on the downstream side of the valve seat surface on which the guide surface is formed.

According to this configuration, the gas flow part can be formed at the tip. For this reason, the operating gas that has passed between the valve seating surface and the valve seat surface can flow through the gas flow part and, can flow to the downstream side in the flow direction Of gas.

In this case, it is preferred that the gas flow part is a V-groove that has an upper part on an upstream side and widens from the top to the downstream side.

According to this configuration, if the valve seating surface of the valve element and the valve seating surface of the valve stem are separated from each other, the upper part of the V-groove appears. As the valve seating surface of the valve element and the valve seat surface of the valve stem are further separated from each other, the area of the flow path formed by the V-groove becomes larger. For this reason, the operating gas flowing between the valve seating surface of the valve element and the valve seat surface of the valve stem can be properly flowed into the V-groove. Additionally, the flow part Gas can be formed by simple machining, such as machining in the V-groove of the tip. Likewise, it is possible to adjust the injection amount of the operating gas appropriately by forming the shape of the V-groove in a manner according to the injection amount of the operating gas.

In this case, it is preferred that the gas flow part is a plurality of V grooves made to cross each other to pass through the center of the valve stem.

According to this configuration, since the plurality of V grooves can be formed at the tip, the operating gas flowing between the valve seating surface of the valve element and the valve seat surface of the valve stem is they can flow properly in the plurality of grooves in V.

In this case, it is preferred that the tip has a locking part provided between the top of the V-groove and the valve seat surface.

According to this configuration, even in the case where the valve seating surface of the valve element and the valve seating surface of the valve stem separate from each other slightly due to an influence, such as vibration or shock, given to the valve stem and to the valve element, the V-groove does not appear and, the gas injection passage is blocked by the blocking part. Therefore, the unexpected injection of the operating gas under the influence on the valve stem and the valve element can be suppressed.

In this case, it is preferred that the gas flow part has a through hole that is formed at the tip from the upstream side in the direction of gas flow to the downstream side to pass through.

According to this configuration, if the valve seating surface of the valve element and the valve seating surface of the valve stem are separated from each other, the through hole appears. For this reason, the operating gas flowing between the valve seating surface of the valve element and the valve seat surface of the valve stem can be properly flowed into the through hole.

In this case, it is preferred that the through hole has a rectangular shape that is curved along the guide surface, in a section cut by a plane orthogonal to the direction of gas flow.

According to this configuration, it is possible to adjust the injection amount of the operating gas appropriately by forming the shape of the through hole which has a rectangular curved opening shape in a shape according to the injection amount of the operating gas.

In this case, it is preferred that the through hole has a circular shape, in a section cut by a plane orthogonal to the direction of gas flow.

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According to this configuration, it is possible to adjust the injection amount of the operating gas appropriately by forming the shape of the circular through hole in a shape according to the injection amount of the operating gas.

In this case, it is preferred that the gas flow part has a groove that is formed on an outer circumferential surface the tip from the upstream side in the gas flow direction to the downstream side.

According to this configuration, if the valve seating surface of the valve element and the valve seat surface of the valve stem are separated from each other, the groove appears. For this reason, the operating gas flowing between the valve seating surface of the valve element and the valve seat surface of the valve stem can be properly flowed into the groove.

In this case, it is preferred that the gas inlet port that allows the operating gas to flow in the gas injection passage be connected to the gas injection passage and, that the flow path area of the part of Gas flow closer to the gas inlet port is smaller than the flow path area of the gas flow part furthest from the gas inlet port.

According to this configuration, since the size of the flow path area of the gas flow part can be changed in consideration of the position where the gas inlet port is formed, the distribution of the operation gas injection Injected passing through the gas flow part can be made more uniform.

In this case, it is preferred to additionally include a flow straightening plate that is provided on the upstream side of the valve seat surface in the direction of gas flow and straightens the flow of operating gas flowing through the passage Gas injection

According to this configuration, since the flow of the operating gas directed between the valve seating surface of the valve element and the valve seating surface of the valve stem can be straightened by means of the flow straightening plate, passing The injection distribution of the injected operating gas between the valve seating surface and the valve seating surface can be made more uniform.

A flying object of the invention includes the anterior thrust control valve.

According to this configuration, since the position of the flying object itself or a head body stored on one side of the tip of the flying object can be controlled by injecting the operating gas from which the distribution of the injection becomes uniform, the posture can be control precisely.

Brief description of the drawings

Figure 1 is a schematic view of the flying object provided with a thrust control valve related to Embodiment 1.

Figure 2 is a sectional view of the thrust control valve related to Embodiment 1 that is cut along an axial direction.

Fig. 3 is a perspective view illustrating a valve stem of the thrust control valve related to Embodiment 1.

Figure 4 is a sectional view of a thrust control valve related to Embodiment 2 that is cut along the axial direction.

Figure 5 is a sectional view of a tip of the valve stem of the thrust control valve related to Embodiment 2 that is cut by a plane orthogonal to the axial direction.

Fig. 6 is a sectional view of a valve stem tip of a thrust control valve related to Embodiment 3 that is cut by the plane orthogonal to the axial direction.

Fig. 7 is a sectional view of a valve stem tip of a thrust control valve related to Embodiment 4 that is cut by the plane orthogonal to the axial direction.

Figure 8 is a sectional view of a thrust control valve related to Embodiment 5 that is cut along the axial direction.

Figure 9 is a sectional view of a flow straightening plate of the thrust control valve related to Embodiment 5 that is cut by the plane orthogonal to the axial direction.

Fig. 10 is a sectional view of a valve stem tip of a thrust control valve related to Embodiment 6 that is cut by the plane orthogonal to the axial direction.

Description of the realizations

Hereinafter, the embodiments related to the invention will be described in detail with reference to the drawings. In addition, the invention is not limited by these embodiments. Additionally, the constituent elements in the following embodiments include elements capable of being easily replaced by a person skilled in the art

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or, substantially the same elements.

Embodiment 1

Figure 1 is a schematic view of the flying object provided with a thrust control valve related to Embodiment 1. As illustrated in Fig. 1, the thrust control valve 10 related to Embodiment 1 is a so-called push button and, a plurality of thrust control valves are provided in the head body 5 stored in a nose cone 4 on one side of the tip of the flying object 1. The plurality of thrust control valves 10 is capable of injecting a gas of operation, thus controlling a flying object 1. Like the control of the flying object 1, the trajectory and posture of the head body 5 exposed from the nose cone 4 of the flying object 1 is controlled. Furthermore, the invention is not limited to this configuration and, the thrust control valves 10 can be fixed to the flying object 1 itself, and the trajectory and posture of the flying object 1 itself can be controlled.

Figure 2 is a sectional view of the thrust control valve related to Embodiment 1 that is cut along an axial direction. Fig. 3 is a perspective view illustrating a valve stem of the thrust control valve related to Embodiment 1. The thrust control valve 10 has a valve element 15 having a gas injection passage L formed therein and, a valve stem 16 inserted inside the valve element 15 along the gas injection passage L.

The valve element 15 is formed in a cylindrical shape and has the gas injection passage L having a hollow column shape, through which an operating gas G to be injected flows, formed therein. In addition, the valve element 15 may be constituted of a plurality of members or may be constituted of a single member. The valve element 15 includes a regulator part 21 protruding on a radial inner side and a nozzle part 22 that is provided on a downstream side of the regulator part 21 in a gas flow direction.

A seating surface of the valve P1 that comes into close contact with the valve stem 16 and, a guided surface P2 guiding the valve stem 16 are formed in the regulator part 21. The seating surface of the valve P1 is it forms in a conical shape such that the gas injection passage L narrows from an upstream side to a downstream side in the direction of gas flow. The guided surface P2 has a cylindrical surface connected to the downstream side of the seating surface of the valve P1 and has a smaller diameter compared to the diameter of the gas injection passage L on the upstream side of the regulator part twenty-one.

The nozzle portion 22 is a region that injects the operating gas G and has a nozzle surface P3 connected to the downstream side of the guided surface P2. The nozzle surface P3 is formed in a conical shape such that the gas injection passage L widens from the upstream side to the downstream side in the direction of gas flow.

For this reason, the gas injection passage L becomes a passage that has a larger diameter on the upstream side of the seating surface of the valve P1, has a reduced diameter on the seating surface of the valve P1, has a smaller diameter on the guided surface P2 and has an increased diameter on the nozzle surface P3.

The valve stem 16 is formed in a column form and is arranged such that an axial center of the valve stem 16 is made to coincide with an axial center of the valve element 15. The valve stem 16 is reciprocal in the axial direction. The valve stem 16 has a tip 25 which is one end on the downstream side in the direction of gas flow and a valve portion 26 provided on the upstream side of the tip 25.

The tip 25 has an outer circumferential surface that becomes a guide surface P4 and comes into sliding contact with the guided surface P2 which is an inner circumferential surface of the gas injection passage L of the valve element 15. For this reason, the tip 25 on the guide surface P4 of the valve stem 16 is formed in a circular shape having a diameter slightly smaller than the internal diameter of the gas injection passage L on the guided surface P2 of the valve element 15. Additionally, a pair of V-grooves 31 (see figure 3) that functions as gas flow parts through which the operating gas G flows to the nozzle part 22 are formed at the tip 25. Each V-groove 31 has an upper part 31a located on the upstream side in the direction of gas flow and has a shape that widens from the top 31a to the downstream side. As illustrated in Figure 3, the pair of V-grooves 31 are orthogonal to each other, such that the respective upper portions 31a pass through the axial center of the valve stem 16. For this reason, four projections 32 having a guide surface P4 is formed on the tip 25 by the pair of V-grooves 31 that are formed to cross each other.

The valve part 26 is formed in a column form having a diameter greater than the internal diameter of the gas injection passage L on the guided surface P2 of the valve element 15. For this reason, the valve part

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26 has a size such that the valve part cannot pass through the gas injection passage L on the guided surface P2. The valve part 26 has a valve seat surface P5 that contacts the upstream side of the guide surface P4 of the tip 25. The valve seat surface P5 has a shape complementary to the seating surface of the valve P1 of the valve element 15 and, is capable of coming into close contact with the seating surface of the valve P1. That is, the valve seat surface P5 has a conical shape that narrows toward the tip 25.

Additionally, the tip 25 has blocking parts 33 that suppress the flow of the operating gas G between the upper parts 31a of the V-grooves 31 and of the valve seat surface P5 of the valve part 26. Each blocking part 33 is a region in which the V groove 31 provided between the valve portion 26 and the projection 32 is not formed and has a length d in the axial direction. For this reason, even if the valve stem 16 moves in the axial direction in a range such that the valve stem 16 falls within the length d, with respect to the valve element 15 from a state in which the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 6 have come into close contact with each other and, a portion between the seating surface of the valve P1 and the seating surface of valve P5 opens slightly, it is possible to suppress the flow of operating gas G.

In the push control valve 10 configured as described above, if the valve stem 16 moves in an outward direction in which the valve closes with respect to the valve element 15, the portion between the settling surface of the valve P1 of the valve element 15 and the valve seat surface P5 of the valve stem 16 narrows. When the valve seating surface P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 come into close contact with each other, the push control valve 10 closes.

Meanwhile, if the valve stem 16 moves in a return direction in which the valve opens with respect to the valve element 15 in a state where the seating surface of the valve P1 of the valve element 15 and the surface of the valve seat P5 of the valve stem 16 have come into close contact with each other, that is, in a closed state of the valve, the portion between the seating surface of the valve P1 of the valve element 15 and the seating surface of valve P5 of valve stem 16 widens. In this case, after the locking parts 33 of the tip 25 of the valve stem 16 have appeared from the regulator part 21 of the valve element 15, the upper parts 31a of the V-grooves 31 of the tip 25 of the valve stem 16 appears from the regulator part 21 of the valve element 15. Then, if the portion between the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 is further enlarged, the grooves in V 31 appear additionally and, therefore, the area of the flow path of the operating gas G formed by the grooves in V 31 become larger. If the V-grooves 31 appear from the regulator part 21, the operating gas G passes through the V-grooves 31, flows into the nozzle part 22 and is injected from the nozzle part 22.

Furthermore, even in a case where the degree of operation of the valve stem 16 from the valve element 15 becomes the maximum, the valve stem 16 is brought into a state of being inserted into the regulator part 21 without the tip 25 of the it is removed from the regulator part 21 of the valve element 15. That is, the tip 25 of the valve stem 16 moves in the axial direction in a state where the tip has been inserted into the regulator part 21 of the valve element fifteen.

In this way, the operating gas G passes through the grooves in V 31, which appears from the regulator part 21 and, therefore, is injected from the nozzle part 22. In this case, the shape of the V-grooves 31 becomes a form according to the injection amount of the operating gas G that will be injected. That is, when it is desired to make the injection amount of the operating gas G extremely large, the groove width of the V-grooves 31 is increased and, when it is desired to perform the injection amount of the operating gas G small, the V groove width 31 is reduced.

As described above, according to the configuration of Embodiment 1, the guiding surface P4 that contacts the guided surface P2 of the gas injection passage L of the valve element 15 can be formed on the outer circumferential surface of the stem Valve 16. For this reason, even in a case where the valve seat surface P5 of the valve stem 16 has separated from the seating surface of the valve P1 of the valve element 15, the guide surface P4 of the stem Valve 16 makes contact with the guided surface P2 of the valve element 15. Therefore, the valve stem 16 can be guided along the guided surface P2 of the valve element 15. Accordingly, the valve stem 16 can move in the axial direction along the guided surface P2 of the valve element 15 in a state where the axial centers of the valve element 15 and the valve stem 16 are h They match each other. For this reason, since the mutual positions of the valve element 15 and the valve stem 16 can be properly maintained, the operating gas G can be properly injected, suppressing variations in the injection distribution of the operating gas G.

Additionally, according to the configuration of Embodiment 1, the guide surface P4 can be formed on the downstream side of the valve seat surface P5. For this reason, the operating gas G that has passed

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between the seating surface of the valve P1 and the valve seating surface P5 passes through the V-grooves 31 of the tip 25 of the valve stem 16. In this case, since the tip 25 of the valve stem 16 guided along the guided surface P2 of the valve element 15, the passage of the operating gas G that will be influenced can be hindered. Therefore, the positions of the valve stem 16 and the valve element 15 can be properly maintained.

Additionally, in accordance with the configuration of Embodiment 1, the V-grooves 31 as the gas flow portions can be formed at the tip 25 on the downstream side of the valve seat surface P5 in which the guide surface P4. For this reason, the operating gas G that has passed between the seating surface of the valve P1 and the valve seating surface P5 can be properly flowed from the V-grooves 31 to the nozzle portion 22. In this case, V-grooves 31 formed on tip 25 can be easily formed by cutting machining. Additionally, it is possible to adjust the injection amount of the operating gas G appropriately by forming the shape of the V-grooves 31 in a manner according to the injection amount of the operating gas G.

Additionally, according to the configuration of Embodiment 1, the locking parts 33 can be provided between the valve seat surface P5 of the valve part 26 and in the upper parts 31a of the V-grooves 31 of the tip 25. For this reason, even in the case where the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 are slightly separated from each other due to an influence, such as vibration or shock , given to the valve stem 16 and the valve element 15, the upper parts 31a of the V-grooves 31 do not appear from the regulator part 21. Therefore, the unexpected injection of the operating gas G under the influence on the valve stem 16 and valve element 15 can be suppressed.

Realization 2

Next, a thrust control valve 50 related to Embodiment 2 will be described with reference to Figures 4 and 5. Fig. 4 is a sectional view of the thrust control valve related to Embodiment 2 that is cut as length of axial direction. Figure 5 is a sectional view of a tip of the valve stem of the thrust control valve related to Embodiment 2 that is cut by a plane orthogonal to the axial direction. In addition, in Embodiment 2, only the different portions of those of Embodiment 1 will be described in order to avoid the description that overlaps that of Embodiment 1. Although the V-grooves 31 are formed at tip 25 of the stem Valve 16 in Embodiment 1, through holes 55 (details thereof will be described below) are formed in a tip 51 of the valve stem 16 in Embodiment 2. Hereinafter, the thrust control valve will be described 50 related to Embodiment 2.

As illustrated in Figure 4, the valve stem 16 of the thrust control valve 50 related to Embodiment 2 has the tip 51 and the valve part 26. Furthermore, since the valve part 26 has the same configuration than that of Embodiment 1, the description thereof will be omitted. The tip 51 has a smaller diameter part 53 connected to the valve part 26 and, a larger diameter part 54 connected to the smaller diameter part 53. The smaller diameter part 53 has a smaller diameter than the gas injection passage L on the guided surface P2 of the regulator part 21 of the valve element 15. For this reason, a predetermined gap is formed between the smaller diameter part 53 and the gas injection passage L in the guided surface p2.

The larger diameter portion 54 has an outer circumferential surface that becomes the guide surface P4 and slides in contact with the guided surface P2 which is the inner circumferential surface of the gas injection passage L of the valve element 15. By this reason, the largest diameter portion 54 on the guide surface P4 of the valve stem 16 is formed in a circular shape having a diameter slightly smaller than the internal diameter of the gas injection passage L on the guided surface P2 of the guide element valve 15. Additionally, the plurality of through holes 55 (see Figure 5) that functions as the gas flow parts through which the operating gas G flows to the nozzle part 22 are formed in a diameter part larger 54. Each through hole 55 is formed in the larger diameter portion 54 to pass through in the axial direction from the upstream side to the ab waters side Garlic. Additionally, each through hole 55 becomes a rectangular opening that curves along the guide surface P4 in a section seen from the axial direction and is formed between the outer diameter of the smallest diameter part 53 and the outer diameter of the largest diameter portion 54. The plurality of through holes 55 are formed side by side along the circumferential direction of the largest diameter portion 54.

In the push control valve 50 configured as described above, if the valve stem 16 moves in the direction of return in which the valve opens with respect to the valve element 15 in a state where the settling surface of the valve P1 of the valve element 15 and the valve seat surface P5 of the valve stem 16 have come into close contact with each other, that is, in a closed state of the valve, the portion between the valve seating surface P1 of the valve element 15 and the valve seat surface P5 of the valve stem 16 widens. In this case, the smallest diameter part 53 of the tip 51 of the valve stem 16 appears from the regulator part 21 of the valve element 15. If the part of

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Smaller diameter 53 appears from the regulator part 21, the operating gas G passing between the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 flows in the recess formed between the smallest diameter part 53 and the gas injection passage L on the guided surface P2. Then, the operating gas G that has flowed into the gap passes through the plurality of through holes 55, flows into the nozzle portion 22 and is injected from the nozzle portion 22.

As described above, according to the configuration of Embodiment 2, the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 are separated from each other and, therefore, therefore, the smaller diameter part 53 appears from the regulator part 21. Accordingly, the plurality of through holes 55 open. For this reason, the operating gas G flowing between the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 can be properly flowed into the plurality of through holes 55 .

Additionally, in accordance with the configuration of Embodiment 2, it is possible to adjust the injection amount of the operating gas G appropriately by forming the shape of the through holes 55 that become the curved rectangular openings in a shape according to the injection amount of the operating gas G.

Embodiment 3

Next, a thrust control valve 60 related to Embodiment 3 will be described with reference to Fig. 6. Fig. 6 is a sectional view of a tip of the thrust control valve stem associated with Embodiment 3. which is cut by an orthogonal plane to the axial direction. In addition, in Embodiment 3, only the different portions of those of Embodiments 1 and 2 will be described in order to avoid the description that overlaps that of Embodiments 1 and 2. In Embodiment 2, the plurality of through holes 55 which become the curved rectangular openings are formed in the larger diameter portion 54 of the tip 51 of the valve stem 16. However, in Embodiment 3, a plurality of through holes 61 which become the circular openings are formed in the larger diameter portion 54 of the tip 51 of the valve stem 16. Hereinafter, the thrust control valve 60 related to Embodiment 3 will be described.

As illustrated in Figure 6, in the valve stem 16 of the thrust control valve 60 related to Embodiment 3, the plurality of through holes 61 that functions as the gas flow parts through which the gas of operation G flows to the nozzle part 22 formed in a larger diameter part 54 of the tip 51. Each through hole 61 is formed in the larger diameter part 54 to pass through in the axial direction from the side upstream to the downstream side. Additionally, each through hole 61 becomes a circular opening in the section seen from the axial direction and is formed between the outer diameter of the smallest diameter part 53 and the outer diameter of the largest diameter part 54. The plurality of Through holes 61 are formed side by side along the circumferential direction of the largest diameter portion 54. In this case, the internal diameters of the plurality of the through holes 61 become an equal diameter.

As described above, according to the configuration of Embodiment 3, the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 are separated from each other and, therefore, therefore, the smallest diameter part 53 appears from the regulator part 21. Accordingly, the plurality of through holes 61 open. For this reason, the operating gas G flowing between the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 can be properly flowed into the plurality of through holes 61 .

Additionally, in accordance with the configuration of Embodiment 3, it is possible to adjust the injection amount of the operating gas G appropriately by making the internal diameter of the through holes 61 that become the circular openings an internal diameter according to the Injection amount of the operating gas G.

Embodiment 4

Next, a thrust control valve 70 related to Embodiment 4 will be described with reference to Fig. 7. Fig. 7 is a sectional view of a valve stem tip of the thrust control valve related to Embodiment 4 which is cut by an orthogonal plane to the axial direction. In addition, in Embodiment 4, only the different portions of those of Embodiments 1 to 3 will be described in order to avoid the description that overlaps that of Embodiments 1 to 3. In Embodiment 3, the internal diameters of the plurality of through holes 61 which become the circular openings formed in the larger diameter portion 54 of the tip 51 of the valve stem 16 become an equal diameter. However, in Embodiment 4, the internal diameters of the plurality of through holes 61 are converted into different diameters. Hereinafter, the thrust control valve 70 related to Embodiment 4 will be described.

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Referring to Figure 4, a gas inlet port 71 that allows the operating gas G to flow in the gas injection passage L through is connected to the gas injection passage L. The gas inlet port 71 it is connected to the axial center of the valve element 15 such that the operating gas G flows in from the radial direction.

As illustrated in Figure 7, in the valve stem 16 of the thrust control valve 70 related to Embodiment 4, between the plurality of through holes 61 formed to pass through the larger diameter portion 54 of the tip 51, the through hole 61 closest to the gas inlet port 71 becomes a through hole 61a having a smaller internal diameter and, the through hole 61 furthest from the gas inlet port 71 becomes a hole through 61b having a larger internal diameter. The plurality of other through holes 61 have internal diameters gradually increased from the through hole 61a having a smaller inside diameter to the through hole 61b having a larger inside diameter.

As described above, in accordance with the configuration of Embodiment 4, in consideration of the position where the gas inlet port 71 is formed, the internal diameters of the through holes 61 closest to the gas inlet port 71 are they can be made smaller and, the internal diameters of the through holes 61 farther from the gas inlet port 71 can be made larger. For this reason, even if the distribution in the gas injection passage L of the operating gas G flowing in from the gas inlet port 71 is not uniform, the injection distribution of the operating gas G passing through the plurality of through holes 61 and injected from the nozzle portion 22 can be performed uniformly.

In addition, although a case where the invention is applied to through holes 61 of Embodiment 3 has been described in Embodiment 4, the invention can be applied to V slots 31 of Embodiment 1 or through holes 55 of Embodiment 2.

Embodiment 5

Next, a thrust control valve 80 related to Embodiment 5 will be described with reference to Figures 8 and 9. Fig. 8 is a sectional view of the thrust control valve related to Embodiment 5 that is cut as length of axial direction. Figure 9 is a sectional view of a flow straightening plate of the thrust control valve related to Embodiment 5 that is cut by the plane orthogonal to the axial direction. In addition, in Embodiment 5, only the different portions of those of Embodiments 1 to 4 will be described in order to avoid the description that overlaps that of Embodiments 1 to 4. In Embodiment 5, the straightening plate of flow 81 is fixed to the upstream side of the valve portion 26 of the valve stem 16. Hereinafter, the thrust control valve 80 related to Embodiment 5 will be described.

As illustrated in Figure 8, the valve stem 16 has the flow straightening plate 81 provided on the upstream side of the valve part 26 in the direction of gas flow. The flow straightening plate 81 is formed in a disk shape and, an outer circumferential surface thereof comes into sliding contact with the inner circumferential surface of the gas injection passage L on the upstream side of the regulator part 21 Additionally, the flow straightening plate 81 is disposed on the downstream side of the gas inlet port 71. As illustrated in Figure 9, a plurality of throughflow straightening holes 82 through which the flow flows Operation gas G is formed in the flow straightening plate 81. Each through-flow through hole 82 is formed in the flow straightening plate 81 to pass through in the axial direction from the upstream side to the water side down. Additionally, each flow straightening through hole 82 becomes a circular opening in the section seen from the axial direction and, is formed between an outer circumferential surface of the valve portion 26 and the inner circumferential surface of the gas injection passage L. The plurality of flow straightening through holes 82 are formed side by side along the circumferential direction of the flow straightening plate 81. In this case, the internal diameters of the plurality of the straightening through holes Flow 82 become an equal diameter.

As described above, according to the configuration of Embodiment 5, the flow of operating gas G flowing between the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the stem of valve 16 can be straightened by the flow straightening plate 81. Therefore, the injection distribution of the injected operating gas G while passing between the seating surface of the valve P1 and the valve seating surface P5 can be made more uniform .

In addition, in Embodiment 5, the plurality of throughflow straightening holes 82 formed in the flow straightening plate 81 are made to have an equal diameter. However, in consideration of the position where the gas inlet port 71 is formed, the internal diameters of the flow straightening through holes 82 closest to the gas inlet port 71 can be made smaller and, the internal diameters of through-flow flow holes 82 farther from the gas inlet port 71 can be made larger. Additionally, the flow straightening plate 81 may be applied to any of Embodiments 1 to 4 without being limited to Embodiment 5.

5

10

fifteen

twenty

25

30

35

Accomplishment 6

Next, a thrust control valve 90 related to Embodiment 6 will be described with reference to Fig. 10. Fig. 10 is a sectional view of a tip of the thrust control valve stem related to Embodiment 6 that is cut. by an orthogonal plane to the axial direction. In addition, in Embodiment 6, only the different portions of those of Embodiments 1 to 5 will be described in order to avoid the description that overlaps that of Embodiments 1 to 5. In Embodiment 2, the plurality of through holes 55 are formed in the larger diameter portion 54 of the tip 51 of the valve stem 16 to pass through. However, in Embodiment 6, the gas flow slots 91 are formed in the larger diameter portion 54 of the tip 51 of the valve stem 16. Hereinafter, the thrust control valve 90 related to Realization 6.

As illustrated in Figure 10, in the valve stem 16 of the thrust control valve 90 related to Embodiment 6, the plurality of gas flow slots 91 which functions as the parts of gas flow through the which operating gas G flows to the nozzle part 22 is formed in a larger diameter part 54 of the tip 51. Each gas flow slot 91 is formed in an outer circumferential surface of the larger diameter part 54 in the axial direction from the upstream side to the downstream side. Additionally, each gas flow slot 91 has a concavely sinking shape, in a section seen from the axial direction. The plurality of gas flow slots 91 are formed side by side along the circumferential direction of the largest diameter portion 54.

As described above, according to the configuration of Embodiment 6, the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 are separated from each other and, therefore, therefore, the smaller diameter part 53 appears from the regulator part 21. Accordingly, the plurality of gas flow slots 91 open. For this reason, the operating gas G flowing between the seating surface of the valve P1 of the valve element 15 and the valve seating surface P5 of the valve stem 16 can be properly flowed into the plurality of flow slots of gas 91.

Additionally, in accordance with the configuration of Embodiment 6, it is possible to adjust the injection amount of the operating gas G appropriately by forming the shape of the gas flow slots 91 in a manner according to the injection amount of the operating gas G.

List of reference signs

1: FLYING OBJECT

4: NOSE CONE

5: HEAD BODY

10: PUSH CONTROL VALVE

15: VALVE ELEMENT

16: VALVE STEM

21: REGULATOR PART

22: NOZZLE PART

25: POINT

26: VALVE PART

31: V-SLOT

32: PROJECTION

33: LOCK PART

50: PUSH CONTROL VALVE (REALIZATION 2)

51: POINT (REALIZATION 2)

53: SMALLEST DIAMETER PART

54: LARGER DIAMETER PART

55: THROUGH HOLE

60: PUSH CONTROL VALVE (REALIZATION 3)

61: PASSING HOLE (REALIZATION 3)

70: PUSH CONTROL VALVE (REALIZATION 4)

71: GAS INPUT PORT

80: PUSH CONTROL VALVE (REALIZATION 5)

81: FLOW REINFORCEMENT PLATE

82: FLOW REINFORCEMENT HOLE HOLE

90: PUSH CONTROL VALVE (REALIZATION 6)

91: GAS FLOW SLOT

L: GAS INJECTION STEP

G: OPERATION GAS

D: LENGTH OF THE LOCK PART

P1 VALVE SETTING SURFACE

P2 GUIDED SURFACE

P3 NOZZLE SURFACE

P4 GUIDE SURFACE

P5 VALVE SEAT SURFACE

Claims (12)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 1. A thrust control valve (10; 50; 60; 70; 80; 90) to perform the trajectory control and posture control of a flying object, comprising: a valve element (15) in which a gas injection passage (L) is formed, through which an operation gas (G) to be injected flows during operation, and a valve seating surface ( P1) is formed in the gas injection passage (L); Y a valve stem (16) that is provided within the gas injection passage (L) and that has a valve seat surface (P5) that is configured to make contact with the valve seating surface (P1) and to close the push control valve (10; 50; 60; 70; 80; 90), and a guide surface (P4) that is arranged to make contact with an inner circumferential surface of the gas injection passage (L) of the valve element (15), even in a case where the valve seat surface (P5) is has separated from the valve seating surface (P1), is formed on an outer circumferential surface of the valve stem (16), wherein the guide surface (P4) is formed on the downstream side of the valve seat surface (P5) in the gas flow direction of the operating gas (G). 2. The thrust control valve (10; 50; 60; 70; 80; 90) according to claim 1, wherein the valve stem (16) has a gas flow portion, through the which the operating gas (G) can flow during the operation, formed in a tip (25; 51) on the downstream side of the valve seat surface (P5) on which the guide surface (P4) is formed . 3. The thrust control valve (10) according to Claim 2, wherein the gas flow part is a V groove (31) having an upper part (31a) on an upstream side and is widens from the top to the downstream side. 4. The thrust control valve (10) according to Claim 3, wherein the gas flow part is a plurality of V grooves (31) made to cross each other to pass through the center of the rod valve (16). 5. The thrust control valve (10) according to Claims 3 or 4, wherein the tip (25) has a blocking part (33) provided between the upper part (31a) of the V-groove ( 31) and the valve seat surface (P5). 6. The thrust control valve (50; 60; 70; 80) according to Claim 2, wherein the gas flow part has a through hole (55; 61) that is formed in the tip (51 ) from the upstream side in the direction of gas flow to the downstream side to pass through it. 7. The thrust control valve (50) according to Claim 6, wherein the through hole (55) has a rectangular shape that curves along the guide surface (P4), in a cut section by an orthogonal plane to the direction of gas flow. 8. The thrust control valve (60; 70; 80) according to Claim 6, wherein the through hole (61) has a circular shape, in a section cut by a plane orthogonal to the flow direction of gas. 9. The thrust control valve (90) according to Claim 2, wherein the gas flow part has a groove (91) that is formed on an outer circumferential surface of the tip (51) from the side upstream in the direction of gas flow to the downstream side. 10. The thrust control valve (50; 80) according to any one of Claims 2 to 9, wherein the gas inlet port (71) allowing the operating gas (G) to flow into the gas injection passage (L) is connected to the gas injection passage (L) and in which the flow path area of the gas flow part closest to the gas inlet port (71) is more smaller than the flow path area of the gas flow part furthest from the gas inlet port (71). 11. The thrust control valve (80) according to any one of Claims 1 to 10, further comprising: a flow straightening plate (81) which is provided on the upstream side of the valve seat surface (P5) in the direction of gas flow and is configured to straighten the flow of the operating gas (G) flowing through the gas injection passage (L). 12. A flying object (1) comprising: the thrust control valve (10; 50; 60; 70; 80; 90) according to any one of Claims 1 to 11.